Iran's chief nuclear negotiator stressed on Sunday that although the Islamic republic is serious in the Vienna talks, it is determined not to trust "the enemy," according to Iran's Foreign Ministry.

Ali Bagheri Kani, who is also Iran's deputy foreign minister for political affairs, made the remarks on the sidelines of the 26th International Oil, Gas, Refining and Petrochemical Exhibition, dubbed Iran Oil Show, in Tehran.

"Iran is serious in the process of the Vienna talks and fulfillment of its international commitments, including those pertaining to the removal of the sanctions, to the same extent that it is determined to refrain from trusting the enemy and relying on foreigners for protection from the coercive measures," he said.